Isotropic-medium three-dimensional cloaks for acoustic and electromagnetic waves


Journal Article

We propose a generalization of the two-dimensional eikonal-limit cloak derived from a conformal transformation to three dimensions. The proposed cloak is a spherical shell composed of only isotropic media; it operates in the transmission mode and requires no mirror or ground plane. Unlike the well-known omnidirectional spherical cloaks, it may reduce visibility of an arbitrary object only for a very limited range of observation angles. In the short-wavelength limit, this cloaking structure restores not only the trajectories of incident rays, but also their phase, which is a necessary ingredient to complete invisibility. Both scalar-wave (acoustic) and transverse vector-wave (electromagnetic) versions are presented. © 2012 American Institute of Physics.

Full Text

Duke Authors

Cited Authors

  • Urzhumov, Y; Landy, N; Smith, DR

Published Date

  • March 1, 2012

Published In

Volume / Issue

  • 111 / 5

International Standard Serial Number (ISSN)

  • 0021-8979

Digital Object Identifier (DOI)

  • 10.1063/1.3691242

Citation Source

  • Scopus